eagle-eyed

eagle-eyed (comparative more eagle-eyed, superlative most eagle-eyed)

1. Having great visual acuity, especially the ability to see at a distance.
   • 2019 November 20, “Stop & Examine”, in Rail, page 79:

     We like old signs at railway stations, and eagle-eyed John Macnab, from Falkirk, spotted one in our photograph of a Virgin Trains Class 390 at London Euston (RAIL 889).

2. Keenly perceptive.

• eagle-sighted